package net.zoneland.zrdp.web.controller.monitor;

import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.stream.Collectors;

import com.google.common.collect.ImmutableList;
import net.zoneland.zrdp.common.core.redis.RedisService;
import org.apache.commons.lang3.StringUtils;

import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import net.zoneland.zrdp.common.constant.CacheConstants;
import net.zoneland.zrdp.common.core.domain.AjaxResult;
import net.zoneland.zrdp.system.domain.SysCache;

import javax.annotation.Resource;

/**
 * 缓存监控
 *
 * @author zonevue
 */
@RestController
@RequestMapping("/monitor/cache")
public class CacheController {
    @Resource
    private RedisService redisService;
    private static final List<SysCache> caches = ImmutableList.<SysCache>builder()
        .add(new SysCache(CacheConstants.LOGIN_TOKEN_KEY, "用户信息"))
        .add(new SysCache(CacheConstants.SYS_CONFIG_KEY, "配置信息"))
        .add(new SysCache(CacheConstants.SYS_DICT_KEY, "数据字典"))
        .add(new SysCache(CacheConstants.CAPTCHA_CODE_KEY, "验证码"))
        .add(new SysCache(CacheConstants.REPEAT_SUBMIT_KEY, "防重提交"))
        .add(new SysCache(CacheConstants.RATE_LIMIT_KEY, "限流处理"))
        .add(new SysCache(CacheConstants.PWD_ERR_CNT_KEY, "密码错误次数"))
        .add(new SysCache(CacheConstants.BUSINESS_KEY, "业务相关"))
        .build();

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @GetMapping()
    public AjaxResult getInfo() {
        final Properties info = redisService.getRedisInfo();
        final Properties commandStats = redisService.getRedisCommandStats();
        final Object dbSize = redisService.getRedisDbSize();

        final Map<String, Object> result = new HashMap<>();
        result.put("info", info);
        result.put("dbSize", dbSize);

        final List<Map<String, String>> pieList = commandStats.stringPropertyNames()
            .stream().map(key -> {
                final Map<String, String> data = new HashMap<>();
                final String property = commandStats.getProperty(key);
                data.put("name", StringUtils.removeStart(key, "cmdstat_"));
                data.put("value", StringUtils.substringBetween(property, "calls=", ",usec"));
                return data;
            }).collect(Collectors.toList());
        result.put("commandStats", pieList);
        return AjaxResult.success(result);
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @GetMapping("/getNames")
    public AjaxResult cache()
    {
        return AjaxResult.success(caches);
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @GetMapping("/getKeys/{cacheName}")
    public AjaxResult getCacheKeys(@PathVariable final String cacheName) {
        final Set<String> cacheKeys = redisService.keys(cacheName + "*");
        return AjaxResult.success(cacheKeys);
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @GetMapping("/getValue/{cacheName}/{cacheKey}")
    public AjaxResult getCacheValue(@PathVariable final String cacheName, @PathVariable final String cacheKey) {
        final String cacheValue = redisService.getCacheString(cacheKey);
        final SysCache sysCache = new SysCache(cacheName, cacheKey, cacheValue);
        return AjaxResult.success(sysCache);
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @DeleteMapping("/clearCacheName/{cacheName}")
    public AjaxResult clearCacheName(@PathVariable final String cacheName) {
        final Collection<String> cacheKeys = redisService.keys(cacheName + "*");
        redisService.deleteObject(cacheKeys);
        return AjaxResult.success();
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @DeleteMapping("/clearCacheKey/{cacheKey}")
    public AjaxResult clearCacheKey(@PathVariable final String cacheKey) {
        redisService.deleteObject(cacheKey);
        return AjaxResult.success();
    }

    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @DeleteMapping("/clearCacheAll")
    public AjaxResult clearCacheAll() {
        redisService.deleteObjectAll();
        return AjaxResult.success();
    }
}
